Air Entrainment Meter of a small amount of air in the cement concrete has been found to improve considerably the durability of concrete. Further, when the use of admixtures is made to increase the workability of concrete, a check of the air content is required to ensure that the percentage of air remains between 1 to 2% to get the optimum performance of the concrete structure. Each apparatus is supplied complete with a calibrating cylinder, pressure gauge, funnel, measuring jug, straight edge and a hand pump. Specifications:
Aggregates which are flaky and/or elongated will often lower the workability of a concrete mix and may also affect long term durability. In bituminous mixtures, flaky aggregates make for a harsh mix and may also crack and break up during compacting by rolling. The flakiness of aggregate is determined by measuring the thickness of individual particles. Hence we offer thickness gauge and length gauge to check flakiness and elongation index of the aggregate respectively.
Specifications:
Cat No. & Name
Description
AT-215: Flakiness (Thickness) Gauge
Used for Determination of flakiness index of coarse aggregates. It consists of a steel frame with a sliding panel having slots of different dimensions.
AT-216: Elongation (Length) Gauge
Used for Determination of elongation index of aggregates. It consists of a steel frame having slots of different dimensions. The frame is fixed on a hard wooden base.
Riffle Sample Divider is required for the rapid collection of true representative samples from aggregates, sand and fillers. Riffle Sample Divider consists of a metal box fitted with a series of chutes of equal width which discharge the material alternatively in opposite directions into separate pans. The chutes of the rifle are steep enough to allow rapid flow of the material. The sample divider is supplied with two containers and a sampling scoop.
Specific Gravity is the ratio of the weight in air of a given volume of a material at a standard temperature to the weight in air of an equal volume of distilled water at the same stated temperature. The Soil Pycnometer Bottle can be used to test a wide range of materials from clay to sand and gravel smaller than 10mm. It consists of 1kg Glass Jar with Brass Cone, Locking Ring and Rubber Seal.
The selection of proper aggregate for a given application is essential to attain the desired quality. Various characteristics are required to be determined for the selection of appropriate aggregate from the wide range available. Aggregate Crushing Value Test Apparatus is used for measuring resistance of an aggregate to crushing.
Specifications:
Cylindrical Cell: 120 mm internal dia x 150 to 120 mm height
Plunger: 150 mm dia x 100 to 115 mm height
Base Plate: 200 to 220 mm square x 7 mm thickness
Tamping Rod: 15 mm dia x 450 to 600 mm length
Metal Measure: 120 mm internal dia x 180 mm height
The density of hardened concrete specimens such as cubes and cylinders can be quickly and accurately determined using a Buoyancy Balance. The apparatus consists of a rigid support frame, incorporating a water tank mounted on a platform. A mechanical lifting device is used to raise the water tank through the frame height immersing the specimen suspended below the balance. Any type of Electronic Balance fitted with an under bench weighing facility can be fitted. The balance supplied can also be used as a standard weighing device, thus providing a versatile and comprehensive weighing system in the laboratory.
Los Angeles Abrasion Testing Machine is used for determining the resistance to wear of small size coarse aggregates and crushed rock. The machine consists of a hollow cylinder, mounted on a sturdy frame on ball bearings. The drum is rotated at a speed of between 30-33 rpm. Supplied complete with subtracting revolution counter to preset the number of revolutions, a sample collection tray for removal of the sample on completion of testing and set of 12 abrasive charges.
Aggregate Impact Value Test Apparatus is used for determining the aggregate impact value. The Sturdy Construction consists of a base and support columns to form a rigid framework around the quick release trigger mechanism to ensure an effective free fall of the hammer during test.
Specifications:
The free fall can be adjusted through 380±5 mm
Height of The Fall Hammer: 380+-5 mm
Aggregate impact value test apparatus is supplied complete with a cylindrical measure of 75 mm dia x 50 mm depth
Los Angeles Abrasion Testing Machine is used for determining the resistance to wear of small size coarse aggregates and crushed rock. The abrasion testing machine consists of a Closed hollow cylindrical steel drum rotating around its horizontal axis on ball bearing units mounted on a sturdy base framework at a speed of between 30-33 rpm. Supplied complete with subtracting revolution counter to preset the number of revolutions, a sample collection tray for removal of the sample on completion of testing and set of 12 abrasive charges.
Specifications:
Testing machine is fitted with 1 HP Motor
Suitable for Operation on 440 V
Phase: Three Phase, 45Hz, AC Supply
Speed between 30-33 rpm
Cat No. & Name
Description
AT-215: Flakiness (Thickness) Gauge
Used for Determination of flakiness index of coarse aggregates. It consists of a steel frame with a sliding panel having slots of different dimensions.
AT-216: Elongation (Length) Gauge
Used for Determination of elongation index of aggregates. It consists of a steel frame having slots of different dimensions. The frame is fixed on a hard wooden base.
